regarding changing email login on facebook
I did a serch on the facebook help link and entered "changing login email"
and got a three step process to change your login email.
it involves loggin into your account and then hitting enter on a link that in essence is the follwoing URL:
I did so and all it did was circle back to the news feed for my account. So, I'm guessing something else needs to be done, or sighted assistance needs to be used.